X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Flmv%2Flmv_internal.h;h=84a6d98f44c468f7d4bbd46dc092465065526de0;hb=c1d0a355a6;hp=5c98cb7837d5b9029b2eb8981e747aebd56bbcbd;hpb=6e3ec5812ebd1b5ecf7cae584f429b013ffe7431;p=fs%2Flustre-release.git diff --git a/lustre/lmv/lmv_internal.h b/lustre/lmv/lmv_internal.h index 5c98cb7..84a6d98 100644 --- a/lustre/lmv/lmv_internal.h +++ b/lustre/lmv/lmv_internal.h @@ -1,6 +1,4 @@ -/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: - * +/* * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. @@ -17,17 +15,15 @@ * * You should have received a copy of the GNU General Public License * version 2 along with this program; If not, see - * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf - * - * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, - * CA 95054 USA or visit www.sun.com if you need additional information or - * have any questions. + * http://www.gnu.org/licenses/gpl-2.0.html * * GPL HEADER END */ /* - * Copyright 2008 Sun Microsystems, Inc. All rights reserved + * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved. * Use is subject to license terms. + * + * Copyright (c) 2011, 2016, Intel Corporation. */ /* * This file is part of Lustre, http://www.lustre.org/ @@ -37,219 +33,193 @@ #ifndef _LMV_INTERNAL_H_ #define _LMV_INTERNAL_H_ -#include #include +#include #define LMV_MAX_TGT_COUNT 128 -#define lmv_init_lock(lmv) cfs_down(&lmv->init_sem); -#define lmv_init_unlock(lmv) cfs_up(&lmv->init_sem); - #define LL_IT2STR(it) \ ((it) ? ldlm_it2str((it)->it_op) : "0") -struct lmv_stripe { - /** - * Dir stripe fid. - */ - struct lu_fid ls_fid; - /** - * Cached home mds number for \a li_fid. - */ - mdsno_t ls_mds; - /** - * Stripe object size. - */ - unsigned long ls_size; - /** - * Stripe flags. - */ - int ls_flags; -}; - -#define O_FREEING (1 << 0) - -struct lmv_object { - /** - * Link to global objects list. - */ - cfs_list_t lo_list; - /** - * Sema for protecting fields. - */ - cfs_semaphore_t lo_guard; - /** - * Object state like O_FREEING. - */ - int lo_state; - /** - * Object ref counter. - */ - cfs_atomic_t lo_count; - /** - * Object master fid. - */ - struct lu_fid lo_fid; - /** - * Object hash type to find stripe by name. - */ - __u32 lo_hashtype; - /** - * Number of stripes. - */ - int lo_objcount; - /** - * Array of sub-objs. - */ - struct lmv_stripe *lo_stripes; - /** - * Pointer to LMV obd. - */ - struct obd_device *lo_obd; -}; - -int lmv_object_setup(struct obd_device *obd); -void lmv_object_cleanup(struct obd_device *obd); - -static inline void -lmv_object_lock(struct lmv_object *obj) +int lmv_intent_lock(struct obd_export *exp, struct md_op_data *op_data, + struct lookup_intent *it, struct ptlrpc_request **reqp, + ldlm_blocking_callback cb_blocking, + __u64 extra_lock_flags); + +int lmv_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *, + void *, int); +int lmv_fld_lookup(struct lmv_obd *lmv, const struct lu_fid *fid, u32 *mds); +int lmv_fid_alloc(const struct lu_env *env, struct obd_export *exp, + struct lu_fid *fid, struct md_op_data *op_data); + +int lmv_revalidate_slaves(struct obd_export *exp, + const struct lmv_stripe_md *lsm, + ldlm_blocking_callback cb_blocking, + int extra_lock_flags); + +int lmv_getattr_name(struct obd_export *exp, struct md_op_data *op_data, + struct ptlrpc_request **preq); +void lmv_activate_target(struct lmv_obd *lmv, struct lmv_tgt_desc *tgt, + int activate); + +int lmv_statfs_check_update(struct obd_device *obd, struct lmv_tgt_desc *tgt); + +static inline struct obd_device *lmv2obd_dev(struct lmv_obd *lmv) { - LASSERT(obj); - cfs_down(&obj->lo_guard); + return container_of0(lmv, struct obd_device, u.lmv); } -static inline void -lmv_object_unlock(struct lmv_object *obj) +static inline struct lu_tgt_desc * +lmv_tgt(struct lmv_obd *lmv, __u32 index) { - LASSERT(obj); - cfs_up(&obj->lo_guard); + return index < lmv->lmv_mdt_descs.ltd_tgt_bitmap->size ? + LTD_TGT(&lmv->lmv_mdt_descs, index) : NULL; } -void lmv_object_add(struct lmv_object *obj); -void lmv_object_del(struct lmv_object *obj); - -void lmv_object_put(struct lmv_object *obj); -void lmv_object_put_unlock(struct lmv_object *obj); -void lmv_object_free(struct lmv_object *obj); +static inline bool +lmv_mdt0_inited(struct lmv_obd *lmv) +{ + return lmv->lmv_mdt_descs.ltd_tgt_bitmap->size > 0 && + cfs_bitmap_check(lmv->lmv_mdt_descs.ltd_tgt_bitmap, 0); +} -struct lmv_object *lmv_object_get(struct lmv_object *obj); +#define lmv_foreach_tgt(lmv, tgt) ltd_foreach_tgt(&(lmv)->lmv_mdt_descs, tgt) -struct lmv_object *lmv_object_find(struct obd_device *obd, - const struct lu_fid *fid); +#define lmv_foreach_tgt_safe(lmv, tgt, tmp) \ + ltd_foreach_tgt_safe(&(lmv)->lmv_mdt_descs, tgt, tmp) -struct lmv_object *lmv_object_find_lock(struct obd_device *obd, - const struct lu_fid *fid); +static inline +struct lu_tgt_desc *lmv_first_connected_tgt(struct lmv_obd *lmv) +{ + struct lu_tgt_desc *tgt; -struct lmv_object *lmv_object_alloc(struct obd_device *obd, - const struct lu_fid *fid, - struct lmv_stripe_md *mea); + tgt = ltd_first_tgt(&lmv->lmv_mdt_descs); + while (tgt && !tgt->ltd_exp) + tgt = ltd_next_tgt(&lmv->lmv_mdt_descs, tgt); -struct lmv_object *lmv_object_create(struct obd_export *exp, - const struct lu_fid *fid, - struct lmv_stripe_md *mea); + return tgt; +} -int lmv_object_delete(struct obd_export *exp, - const struct lu_fid *fid); +static inline +struct lu_tgt_desc *lmv_next_connected_tgt(struct lmv_obd *lmv, + struct lu_tgt_desc *tgt) +{ + do { + tgt = ltd_next_tgt(&lmv->lmv_mdt_descs, tgt); + } while (tgt && !tgt->ltd_exp); -int lmv_check_connect(struct obd_device *obd); + return tgt; +} -int lmv_intent_lock(struct obd_export *exp, struct md_op_data *op_data, - void *lmm, int lmmsize, struct lookup_intent *it, - int flags, struct ptlrpc_request **reqp, - ldlm_blocking_callback cb_blocking, - int extra_lock_flags); - -int lmv_intent_lookup(struct obd_export *exp, struct md_op_data *op_data, - void *lmm, int lmmsize, struct lookup_intent *it, - int flags, struct ptlrpc_request **reqp, - ldlm_blocking_callback cb_blocking, - int extra_lock_flags); - -int lmv_intent_open(struct obd_export *exp, struct md_op_data *op_data, - void *lmm, int lmmsize, struct lookup_intent *it, - int flags, struct ptlrpc_request **reqp, - ldlm_blocking_callback cb_blocking, - int extra_lock_flags); - -int lmv_allocate_slaves(struct obd_device *obd, struct lu_fid *pid, - struct md_op_data *op, struct lu_fid *fid); - -int lmv_revalidate_slaves(struct obd_export *, struct ptlrpc_request **, - const struct lu_fid *, struct lookup_intent *, int, - ldlm_blocking_callback cb_blocking, - int extra_lock_flags); +#define lmv_foreach_connected_tgt(lmv, tgt) \ + for (tgt = lmv_first_connected_tgt(lmv); tgt; \ + tgt = lmv_next_connected_tgt(lmv, tgt)) -int lmv_handle_split(struct obd_export *, const struct lu_fid *); -int lmv_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *, - void *, int); -int lmv_fld_lookup(struct lmv_obd *lmv, const struct lu_fid *fid, - mdsno_t *mds); -int __lmv_fid_alloc(struct lmv_obd *lmv, struct lu_fid *fid, - mdsno_t mds); -int lmv_fid_alloc(struct obd_export *exp, struct lu_fid *fid, - struct md_op_data *op_data); - -static inline struct lmv_stripe_md *lmv_get_mea(struct ptlrpc_request *req) +static inline int +lmv_fid2tgt_index(struct lmv_obd *lmv, const struct lu_fid *fid) { - struct mdt_body *body; - struct lmv_stripe_md *mea; + u32 mdt_idx; + int rc; - LASSERT(req != NULL); + if (lmv->lmv_mdt_count < 2) + return 0; - body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY); + rc = lmv_fld_lookup(lmv, fid, &mdt_idx); + if (rc < 0) + return rc; - if (!body || !S_ISDIR(body->mode) || !body->eadatasize) - return NULL; + return mdt_idx; +} - mea = req_capsule_server_sized_get(&req->rq_pill, &RMF_MDT_MD, - body->eadatasize); - LASSERT(mea != NULL); +static inline struct lmv_tgt_desc * +lmv_fid2tgt(struct lmv_obd *lmv, const struct lu_fid *fid) +{ + struct lu_tgt_desc *tgt; + int index; - if (mea->mea_count == 0) - return NULL; - if( mea->mea_magic != MEA_MAGIC_LAST_CHAR && - mea->mea_magic != MEA_MAGIC_ALL_CHARS && - mea->mea_magic != MEA_MAGIC_HASH_SEGMENT) - return NULL; + index = lmv_fid2tgt_index(lmv, fid); + if (index < 0) + return ERR_PTR(index); - return mea; + tgt = lmv_tgt(lmv, index); + + return tgt ? tgt : ERR_PTR(-ENODEV); } -static inline int lmv_get_easize(struct lmv_obd *lmv) +static inline int lmv_stripe_md_size(int stripe_count) { - return sizeof(struct lmv_stripe_md) + - lmv->desc.ld_tgt_count * - sizeof(struct lu_fid); + struct lmv_stripe_md *lsm; + + return sizeof(*lsm) + stripe_count * sizeof(lsm->lsm_md_oinfo[0]); } -static inline struct lmv_tgt_desc * -lmv_get_target(struct lmv_obd *lmv, mdsno_t mds) +/* for file under migrating directory, return the target stripe info */ +static inline const struct lmv_oinfo * +lsm_name_to_stripe_info(const struct lmv_stripe_md *lsm, const char *name, + int namelen, bool post_migrate) { - return &lmv->tgts[mds]; + __u32 hash_type = lsm->lsm_md_hash_type; + __u32 stripe_count = lsm->lsm_md_stripe_count; + int stripe_index; + + LASSERT(lmv_dir_striped(lsm)); + + if (hash_type & LMV_HASH_FLAG_MIGRATION) { + if (post_migrate) { + hash_type &= ~LMV_HASH_FLAG_MIGRATION; + stripe_count = lsm->lsm_md_migrate_offset; + } else { + hash_type = lsm->lsm_md_migrate_hash; + stripe_count -= lsm->lsm_md_migrate_offset; + } + } + + stripe_index = lmv_name_to_stripe_index(hash_type, stripe_count, + name, namelen); + if (stripe_index < 0) + return ERR_PTR(stripe_index); + + if ((lsm->lsm_md_hash_type & LMV_HASH_FLAG_MIGRATION) && !post_migrate) + stripe_index += lsm->lsm_md_migrate_offset; + + if (stripe_index >= lsm->lsm_md_stripe_count) { + CERROR("stripe_index %d stripe_count %d hash_type %#x " + "migrate_offset %d migrate_hash %#x name %.*s\n", + stripe_index, lsm->lsm_md_stripe_count, + lsm->lsm_md_hash_type, lsm->lsm_md_migrate_offset, + lsm->lsm_md_migrate_hash, namelen, name); + return ERR_PTR(-EBADF); + } + + return &lsm->lsm_md_oinfo[stripe_index]; } -static inline struct lmv_tgt_desc * -lmv_find_target(struct lmv_obd *lmv, const struct lu_fid *fid) +static inline bool lmv_dir_retry_check_update(struct md_op_data *op_data) { - mdsno_t mds; - int rc; + const struct lmv_stripe_md *lsm = op_data->op_mea1; - rc = lmv_fld_lookup(lmv, fid, &mds); - if (rc) - return ERR_PTR(rc); + if (!lsm) + return false; - return lmv_get_target(lmv, mds); -} + if (lmv_dir_migrating(lsm) && !op_data->op_post_migrate) { + op_data->op_post_migrate = true; + return true; + } -/* lproc_lmv.c */ -#ifdef LPROCFS -void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars); -#else -static inline void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars) -{ - memset(lvars, 0, sizeof(*lvars)); + if (lmv_dir_bad_hash(lsm) && + op_data->op_stripe_index < lsm->lsm_md_stripe_count - 1) { + op_data->op_stripe_index++; + return true; + } + + return false; } -#endif -extern struct file_operations lmv_proc_target_fops; +struct lmv_tgt_desc *lmv_locate_tgt(struct lmv_obd *lmv, + struct md_op_data *op_data); +int lmv_migrate_existence_check(struct lmv_obd *lmv, + struct md_op_data *op_data); + +/* lproc_lmv.c */ +int lmv_tunables_init(struct obd_device *obd); #endif